CN105962004A - Heating control method of heat pump vacuum freeze drying combined device - Google Patents
Heating control method of heat pump vacuum freeze drying combined device Download PDFInfo
- Publication number
- CN105962004A CN105962004A CN201610299889.7A CN201610299889A CN105962004A CN 105962004 A CN105962004 A CN 105962004A CN 201610299889 A CN201610299889 A CN 201610299889A CN 105962004 A CN105962004 A CN 105962004A
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- heating
- heat
- heating medium
- cooling water
- condenser
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/40—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by drying or kilning; Subsequent reconstitution
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/40—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by drying or kilning; Subsequent reconstitution
- A23L3/44—Freeze-drying
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- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to a heating control method of a heat pump vacuum freeze drying combined device. The heating control method of a control system is characterized in that a high-temperature high-pressure refrigerant discharged from a compressor enters a bypass heat exchanger, a cooling water flow regulating valve is used for regulating the cooling water flow and thus adjusting the heat released through heat transfer between the refrigerant in the bypass heat exchanger and the cooling water, in a condenser, the refrigerant and a heating medium entering drying chamber heating division plates are subjected to heat transfer, the heat is released, the refrigerant all turns into liquid, and then the liquid enters a throttle valve; the heating medium enters the drying chamber heating division plates after the temperature of the heating medium is increased by the heat, and the heating medium is subjected to heat release via the drying chamber heating division plates, and then the heating medium enters the condenser via a heating medium circulating pump, conducting heat transfer for heating on the refrigerant and the heating medium entering the condenser; and according to food drying technological parameter requirements, temperature T1 of the heating medium entering an inlet of the drying chamber heating division plates is determined, and the temperature is used as a control subject and realized by adjusting the opening degrees of the cooling water flow regulating valve. The device has the following advantages: the refrigeration system is stable in operation and convenient in control, the flow of the heating medium entering the drying chamber heating division plates is constant, and the temperature of each layer of the division plates in the drying chamber heating division plates is ensured.
Description
Technical field
The present invention relates to the method for heating and controlling of a kind of heat pump vacuum lyophilization unit equipment.
Background technology
In heat pump vacuum lyophilization unit equipment, on the one hand refrigeration system provides cold for water vessel, the most also provides heat for dryness storehouse heated barrier, it is achieved that vacuum freeze energy saving in running.But refrigeration system condenser heat utilizes when, there is Railway Project, one is that its heat is more than heated barrier institute calorific requirement, two be compressor get rid of cold-producing medium be superheated steam, cannot directly enter dividing plate, before and after otherwise causing dividing plate, the temperature difference is very big, three be vacuum freeze in running, needed for it, thermal change is relatively big, therefore it is required that heating system has good control performance.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art to provide the method for heating and controlling of a kind of heat pump vacuum lyophilization unit equipment, it can be according to food drying technological parameter requirement, by regulation enter hothouse heated barrier add thermal medium, the heat ratio of condenser regulates hothouse heat supply temperature and heat, and ensure that heated barrier temperature homogeneity, make heating system have good control performance simultaneously.
In order to achieve the above object, the present invention is realized in, it is the method for heating and controlling of a kind of heat pump vacuum lyophilization unit equipment, it is characterised in that dry combination includes compressor, cooling water flow regulation valve, bypass heat exchanger, heating medium circulation pump, condenser, heating medium inlet temperature sensor, hothouse heated barrier, choke valve, condensation temperature sensor, control system, water vessel and vacuum system；Wherein said heating medium inlet temperature sensor senses enters temperature T1 adding thermal medium of hothouse heated barrier entrance, condensation temperature T2 of condensation temperature sensor sensing condenser；The method for heating and controlling of described control system is as follows:
(1) high-temperature high-pressure refrigerant that compressor is discharged enters bypass heat exchanger, described cooling water flow regulation valve is used for regulating cold-producing medium in cooling water flow and then regulation bypass heat exchanger and leads to supercooled water liberated heat, the cold-producing medium flowed out from bypass heat exchanger goes successively to condenser, within the condenser, cold-producing medium and the thermal medium that adds entering hothouse heated barrier carry out heat exchange, releasing heat, cold-producing medium all becomes liquid, subsequently into choke valve；Adding thermal medium to obtain entering hothouse heated barrier after heat heats up, after adding the heated barrier heat release of thermal medium drying room, the most heated medium circulation pump enters condenser and cold-producing medium carries out heat exchange；
(2) require to determine the heating medium temperature T1 of entrance hothouse heated barrier entrance according to food drying technological parameter, realized by the aperture of regulation cooling water flow regulation valve as control object, when heating medium temperature T1 actual value is more than setting value, the aperture of cooling water flow regulation valve strengthens, otherwise reduces.
Present invention advantage compared with prior art is: refrigeration system refrigerant flow path is single series loop, and refrigeration system is stable, easy to control；Hothouse heated barrier is heated by circulating-heating medium, and the heating medium flow making entrance hothouse heated barrier is constant, it is ensured that in hothouse heated barrier, each layer dividing plate is stability.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of embodiment of the present invention.
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
As shown in Figure 1, it is the method for heating and controlling of a kind of heat pump vacuum lyophilization unit equipment, and dry combination includes compressor 1, cooling water flow regulation valve 2, bypass heat exchanger 3, heating medium circulation pump 4, condenser 5, heating medium inlet temperature sensor 6, hothouse heated barrier 7, choke valve 8, condensation temperature sensor 9, control system 10, water vessel 11 and vacuum system 12；Wherein
The refrigerant outlet of described compressor 1 connects with the refrigerant inlet of bypass heat exchanger 3, the refrigerant outlet of described bypass heat exchanger 3 connects with the refrigerant inlet of condenser 5, the refrigerant outlet of described condenser 5 connects with the refrigerant inlet of choke valve 8, described choke valve 8 refrigerant outlet connects with the refrigerant inlet of water vessel 11, and the refrigerant outlet of water vessel 11 connects with the cold-producing medium gas returning port of compressor 1；Described heating medium circulation pump 4 is connected with hothouse heated barrier 7, after condenser 5 is to adding thermal medium heating, heated after the thermal medium that adds be flowed in hothouse heated barrier 7 hothouse heated；The temperature of described cooling water flow regulation valve 2 scalable bypass heat exchanger 3, described vacuum system 12 carries out evacuation to hothouse, and water vessel 11 traps the moisture content from hothouse；
Described heating medium inlet temperature sensor 6 sensing enters the temperature adding thermal medium of hothouse heated barrier 7 entrance, namely temperature T1 of hothouse heated barrier 7, and condensation temperature sensor 9 senses condensation temperature T2 of condenser 5；The method for heating and controlling of control system 10 is as follows:
(1) high-temperature high-pressure refrigerant that compressor 1 is discharged enters bypass heat exchanger 3, bypass heat exchanger 3 releases partial heat after carrying out heat exchange with cooling water, described cooling water flow regulation valve 2 is used for regulating cold-producing medium in cooling water flow, and then regulation bypass heat exchanger 3 and leads to supercooled water liberated heat；The cold-producing medium flowed out from bypass heat exchanger 3 goes successively to condenser 5, and in condenser 5, cold-producing medium and the thermal medium that adds entering hothouse heated barrier 7 carry out heat exchange, and heat released by cold-producing medium, and cold-producing medium enters choke valve 8 after all becoming liquid and throttles；Adding thermal medium to obtain entering hothouse heated barrier 7 after heat heats up, after adding thermal medium drying room heated barrier 7 and processing materials heat release, temperature reduces, and then adds thermal medium heated medium circulation pump 4 and enters condenser 5 and carry out heat exchange with cold-producing medium；
(2) require to determine temperature T1 adding thermal medium of entrance hothouse heated barrier 7 entrance according to food drying technological parameter, realized by the aperture of regulation cooling water flow regulation valve 2 as control object, when the temperature T1 actual value adding thermal medium is more than setting value, the aperture of cooling water flow regulation valve 2 strengthens, otherwise reduces.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: these embodiments can carry out multiple change in the case of without departing from the principle of the present invention and objective, revise, replace and deform, the scope of the present invention is limited by claim and equivalent thereof.
Claims (1)
1. the method for heating and controlling of a heat pump vacuum lyophilization unit equipment, it is characterised in that dry combination includes compressor (1), cooling water flow regulation valve (2), bypass heat exchanger (3), heating medium circulation pump (4), condenser (5), heating medium inlet temperature sensor (6), hothouse heated barrier (7), choke valve (8), condensation temperature sensor (9), control system (10), water vessel (11) and vacuum system (12)；The sensing of wherein said heating medium inlet temperature sensor (6) enters temperature T1 adding thermal medium of hothouse heated barrier (7) entrance, condensation temperature T2 of condensation temperature sensor (9) sensing condenser (5)；The method for heating and controlling of described control system (10) is as follows:
(1) high-temperature high-pressure refrigerant that compressor (1) is discharged enters bypass heat exchanger (3), described cooling water flow regulation valve (2) is used for regulating cold-producing medium in cooling water flow and then regulation bypass heat exchanger (3) and leads to supercooled water liberated heat, the cold-producing medium flowed out from bypass heat exchanger (3) goes successively to condenser (5), in condenser (5), cold-producing medium and the thermal medium that adds entering hothouse heated barrier (7) carry out heat exchange, release heat, cold-producing medium all becomes liquid, subsequently into choke valve (8)；Adding thermal medium to obtain entering hothouse heated barrier (7) after heat heats up, after adding heated barrier (7) heat release of thermal medium drying room, the most heated medium circulation pump (4) enters condenser (5) and cold-producing medium carries out heat exchange；
(2) require to determine the heating medium temperature T1 of entrance hothouse heated barrier (7) entrance according to food drying technological parameter, realized by the aperture of regulation cooling water flow regulation valve (2) as control object, when heating medium temperature T1 actual value is more than setting value, the aperture of cooling water flow regulation valve (2) strengthens, otherwise reduces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610299889.7A CN105962004B (en) | 2016-05-09 | 2016-05-09 | Heating control method of heat pump vacuum freeze drying combined equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610299889.7A CN105962004B (en) | 2016-05-09 | 2016-05-09 | Heating control method of heat pump vacuum freeze drying combined equipment |
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| Publication Number | Publication Date |
|---|---|
| CN105962004A true CN105962004A (en) | 2016-09-28 |
| CN105962004B CN105962004B (en) | 2019-12-20 |
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| CN201610299889.7A Active CN105962004B (en) | 2016-05-09 | 2016-05-09 | Heating control method of heat pump vacuum freeze drying combined equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113480132A (en) * | 2021-07-15 | 2021-10-08 | 西安联盛能源科技有限公司 | Sludge vacuum drying system and method |
| CN115715038A (en) * | 2022-11-28 | 2023-02-24 | 南京沃森精密制造科技有限公司 | Cooling device of induction heating equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200979337Y (en) * | 2006-09-15 | 2007-11-21 | 顺德职业技术学院 | Vacuum freezing and drying apparatus |
| CN202407018U (en) * | 2012-01-29 | 2012-09-05 | 济南大陆机电股份有限公司 | Recycling system for waste heat of vacuum freeze-drying equipment |
| CN203454674U (en) * | 2013-06-09 | 2014-02-26 | 浙江海洋学院 | Heat pump drying device |
| CN203489586U (en) * | 2013-07-26 | 2014-03-19 | 厦门志闽机械设备有限公司 | Full-automatic multifunctional vacuum drying machine |
-
2016
- 2016-05-09 CN CN201610299889.7A patent/CN105962004B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200979337Y (en) * | 2006-09-15 | 2007-11-21 | 顺德职业技术学院 | Vacuum freezing and drying apparatus |
| CN202407018U (en) * | 2012-01-29 | 2012-09-05 | 济南大陆机电股份有限公司 | Recycling system for waste heat of vacuum freeze-drying equipment |
| CN203454674U (en) * | 2013-06-09 | 2014-02-26 | 浙江海洋学院 | Heat pump drying device |
| CN203489586U (en) * | 2013-07-26 | 2014-03-19 | 厦门志闽机械设备有限公司 | Full-automatic multifunctional vacuum drying machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113480132A (en) * | 2021-07-15 | 2021-10-08 | 西安联盛能源科技有限公司 | Sludge vacuum drying system and method |
| CN115715038A (en) * | 2022-11-28 | 2023-02-24 | 南京沃森精密制造科技有限公司 | Cooling device of induction heating equipment |
| CN115715038B (en) * | 2022-11-28 | 2023-10-31 | 南京沃森精密制造科技有限公司 | Cooling device of induction heating equipment |
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| CN105962004B (en) | 2019-12-20 |
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